1851
Microsoft published a guide on how to install Linux.
(programming.dev)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Well, it's making them plenty of money, but they pretty much get that money no matter what (from the device manufacturers when they sell hardware, and from businesses afraid to have their software entitlement coupled to the accident of their hardware).
Now it's a game of using that guaranteed footprint to bolster the recurring revenue services (OneDrive, Office, Azure). They still get the money for however the copy got there, but also use the copy to launch folks into recurring revenue options.